S
M
T
W
T
F
S
26
88°
75°
27
88°
76°
28
89°
76°
29
87°
75°
30
87°
76°
31
88°
76°
1
87°
75°
2
88°
76°
3
89°
76°
4
87°
75°
5
90°
75°
6
89°
76°
7
87°
76°
8
88°
75°
9
87°
75°
10
86°
74°
11
86°
75°
12
87°
76°
13
87°
76°
14
88°
75°
15
87°
76°
16
88°
76°
17
88°
75°
18
89°
76°
19
91°
76°
20
91°
75°
21
90°
70°
22
87°
70°
23
88°
72°
24
87°
71°
25
88°
73°
26
89°
74°
27
87°
74°
28
87°
75°
29
91°
75°
30
92°
74°
31
92°
75°
1
91°
75°
2
92°
74°
3
91°
76°
4
92°
75°
5
90°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Slidell
Slidell's August 2026 forecast shows daily high temperatures ranging from 86° to 92°, with overnight lows between 70° and 76°. The average high for August is 89° with an average low of 75°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Slidell. See also: September | October | November.
